The HST/ACS Survey of Galactic globular clusters (GGCs) is a HST Treasury project aimed at obtaining high precision photometry in a large sample of globular...
Photometric calibration of M-dwarf metallicity using Bayesian inference
Metallicity has remained as a challenging parameter when characterizing M-type dwarf stars due to difficulties in the analysis of their spectra, dominated by...
The answers to fundamental science questions in astrophysics, ranging from the history of the expansion of the universe to the sizes of nearby stars, hinge on...
Photometric CCD observations of four Pre-cataclysmic binary candidates
We present preliminary results of differential photometric observations of Abell 65, HZ 9, GD 1401 and BPM 46460, obtained between September and December 2006...
Photometric evidence of superhumps in XTE J1118+48 approaching quiescence
Ellipsoidal lightcurves of XTE J1118+48 during its decline to quiescence are strongly contaminated with a superhump wave. A PDM period analysis yields Psh = 0...
Photometric history of some LBV candidates of M 33.
We present the photometric history of some luminous blue variable candidate stars of M 33. The search was made with the plates collection of the Bulgarian...